ok i have a 02 banshee boysen reeds and k&n im having a reallly hard time gettin it to run right. it will not idle . and backfires coming off the sensor. it has no power after 3/4 throttle the carbs are in sync. no powerband when i get into 5ht and 6th it bogs out and i have to down shift. i dont understand whats goin wrong anyone with someknowledge